Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book17/24CountryDances_1809_Button_Whitaker.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5261-24CountryDances_1809_Button_Whitaker.ps) >>/Users/jc/w/tmp/Tune-5261-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book17/24CountryDances_1809_Button_Whitaker.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_52612.log 279209 Log file, useful mostly for debugging
Sess-52611.log 109792 Log file, useful mostly for debugging
Tune-5261-24CountryDances_1809_Button_Whitaker.abc 175 ABC music file with the extracted tune(s)
Tune-5261-24CountryDances_1809_Button_Whitaker.ps 6 PostScript
Tune-5261-24CountryDances_1809_Button_Whitaker.txt 175 Plain-text file with the extracted tune(s)
Tune-5261-get.log 4624 Log file, useful mostly for debugging
Tune-52610-get.log 5431 Log file, useful mostly for debugging
Tune-52613-get.log 6716 Log file, useful mostly for debugging
Tune-52615-get.log 3241 Log file, useful mostly for debugging
Tune-52616-get.log 11752 Log file, useful mostly for debugging
Tune-52617-get.log 3150 Log file, useful mostly for debugging
Tune-52618-get.log 3959 Log file, useful mostly for debugging
Tune-52619-get.log 4476 Log file, useful mostly for debugging
These files should be available for 24 hours.